Detective Beauregard
Leviathan of Doggerland
he just sounds like he's trying too hard to be Dio.
Shouldn't everyone?
I've never heard of Solitude Aeturnus before, but both of those covers are pretty solid. Is this the type of stuff they normally do? Also, perhaps Dio is just one of the guy's biggest influences. Also keep in mind that it's pretty hard to sing Dio material without giving it some kind of Dio inflection; it risks sounding quite sterile otherwise.
That said, I agree about adding personal style to covers. Otherwise, what's the point, really?